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The F5 BIG-IP appliance must set the idle time before automatic logout to five minutes of inactivity except to fulfill documented and validated mission requirements.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-266095F5BI-DM-300057SV-266095r1024904_ruleCCI-001133high
Description
Terminating an idle session within a short time period reduces the window of opportunity for unauthorized personnel to take control of a management session enabled on the console or console port that has been left unattended. In addition, quickly terminating an idle session will also free up resources committed by the managed network element. Terminating network connections associated with communications sessions includes, for example, deallocating associated TCP/IP address/port pairs at the operating system level, or deallocating networking assignments at the application level if multiple application sessions are using a single, operating system-level network connection. This does not mean that the device terminates all sessions or network access; it only ends the inactive session and releases the resources associated with that session. Satisfies: SRG-APP-000190-NDM-000267, SRG-APP-000003-NDM-000202
STIGDate
F5 BIG-IP TMOS NDM Security Technical Implementation Guide2025-06-12

Related Frameworks

2 mappings across 4 frameworks
SCF0 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (2) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

NET-07Network Connection Termination
1.00
IAC-24Session Lock
0.50
NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (34) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

AC-11Device Lock
1.00
AC-11(1)Pattern-hiding Displays
1.00
AC-12Session Termination
1.00
AC-12(2)Termination Message
1.00
AC-2(1)Automated System Account Management
1.00
AC-2(11)Usage Conditions
1.00
AC-2(2)Automated Temporary and Emergency Account Management
1.00
AC-2(3)Disable Accounts
1.00
AC-2(4)Automated Audit Actions
1.00
AC-7Unsuccessful Logon Attempts
1.00

+24 more (top 10 by confidence shown)

NIST 800-1710 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (2) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

3.1.10
1.00
3.13.9
1.00
CCI2 mappings
CCI-000057
1.00
CCI-001133
1.00

Details

Check Text (C-266095r1024904_chk)

If a documented and validated reason for not implementing the five-minute idle timeout exists, this is not a finding. From the BIG-IP GUI: HTTPD/TMSH: 1. System. 2. Preferences. 3. Under Security Settings, verify "Idle Time Before Automatic Logout" is configured for 300 seconds or less. SSHD: 1. System. 2. Configuration. 3. Device. 4. SSHD. 5. Verify "Idle Time Before Automatic Logout" is configured for 300 seconds or less. From the BIG-IP Console, issue the following commands: HTTPD/TMSH: tmsh list sys httpd auth-pam-idle-timeout Note: This must return a value of 300 or less. tmsh list sys httpd auth-pam-dashboard-timeout Note: This must return a value of "on". tmsh list sys global-settings console-inactivity-timeout Note: This must return a value of 300 or less. tmsh list cli global-settings idle-timeout Note: This must return a value of 5. SSHD: tmsh list sys sshd inactivity-timeout Note: This must return a value of 300 or less. If the BIG-IP appliance is not configured to terminate inactive sessions after five minutes of inactivity, this is a finding.

Fix Text (F-69922r1023535_fix)

From the BIG-IP GUI: HTTPD/TMSH: 1. System. 2. Preferences. 3. Under Security Settings configure "Idle Time Before Automatic Logout" to 300 seconds. 4. Click "Update". SSHD: 1. System. 2. Configuration. 3. Device. 4. SSHD. 5. Configure "Idle Time Before Automatic Logout" to 300 seconds. 6. Click "Update". From the BIG-IP Console, issue the following commands: HTTPD/TMSH: tmsh modify sys httpd auth-pam-idle-timeout 300 tmsh modify sys httpd auth-pam-dashboard-timeout on tmsh modify sys global-settings console-inactivity-timeout 300 tmsh modify cli global-settings idle-timeout 5 SSHD: tmsh modify sys sshd inactivity-timeout 300 tmsh save sys config